Air freshener



FIG. 1 is a front perspective view of an air freshener showing my design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof; and,

FIG. 4 is the side elevation thereof, all sides being a mirror image.

The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design. 

I claim the ornamental design for an air freshener, as shown and described. 